The 2340CV is purely a coverstitch machine with no blades like an overlocker. This model has differential feed which allows you to alter the speed at which your fabric is feeding through the machine. With 3 needles and one looper thread, the coverstitch machine creates professional hems, chain stitch and decorative stitching. Set your overlocker next to your coverstitch machine and you can make the perfect T-shirt in no time. All hems and necklines can be hemmed and raw edge neatened in one go.